DIN376 Spiral flute tap
Spiral Flute Design
High-Efficiency Chip Evacuation: Spiral flutes optimize chip flow, preventing clogging in blind holes.
Reduced Cutting Resistance: Continuous cutting minimizes vibration for smoother threads.
Material & Coating
Cobalt HSS (HSS-E): Hardness 63-65 HRC with 30% higher wear resistance for tough materials.
Optional TiN/TiCN Coating: Reduces friction and extends tool life in dry/MQL machining.
Precision Threads
Ground Thread Profile: Complies with DIN376 standard, achieving 6H tolerance for precise fit.
High-Speed Machining
Speed Capacity: Up to 20 m/min for carbon steel and 15 m/min for stainless steel.
CNC Compatibility: Ideal for automated production with reduced tool changes.
TYPICAL APPLICATION SCENARIOS
Automotive Manufacturing
Engine Blocks & Gearbox Housings: Blind hole threading in aluminum alloy/cast iron.
Aerospace
Titanium Fasteners & Aerospace Aluminum: Precision threading for critical components.
Electronics
5G Heatsinks & Micro-Connectors: Threading small sizes (M1-M3) with high accuracy.
Heavy Machinery
Hydraulic Valve Blocks & Pump Bodies: Deep hole threading (depth ≥1.5×D).
General Machining
Stainless Steel (SUS304) & Alloy Steel (42CrMo): High-volume production of threaded parts.
| Feature |
DIN376 Spiral Flute Tap |
Standard Straight Tap |
| Blind Hole Chip Flow |
Efficient spiral evacuation |
Prone to clogging |
| Cutting Speed |
20%-30% faster |
Standard speed |
| Surface Finish |
Ra≤1.6μm |
Ra≤3.2μm |
| Size |
L |
Lc |
Limit |
d |
k |
dk |
| M3 |
56 |
5 |
6H |
2.2 |
- |
2.5 |
| M3.5 |
56 |
6 |
6H |
2.5 |
2.1 |
2.9 |
| M4 |
63 |
7 |
6H |
2.8 |
2.1 |
3.3 |
| M4.5 |
70 |
8 |
6H |
3.5 |
2.7 |
3.7 |
| M5 |
70 |
8 |
6H |
3.5 |
2.7 |
4.2 |
| M6 |
80 |
10 |
6H |
4.5 |
3.4 |
5 |
| M7 |
80 |
10 |
6H |
5.5 |
4.3 |
6 |
| M8 |
90 |
13 |
6H |
6 |
4.9 |
6.8 |
| M9 |
90 |
13 |
6H |
7 |
5.5 |
7.8 |
| M10 |
100 |
15 |
6H |
7 |
5.5 |
8.5 |
| M11 |
100 |
15 |
6H |
8 |
6.2 |
9.5 |
| M12 |
110 |
18 |
6H |
9 |
7 |
10.2 |
| M14 |
110 |
20 |
6H |
11 |
9 |
12 |
| M16 |
110 |
20 |
6H |
12 |
9 |
14 |
| M18 |
125 |
25 |
6H |
14 |
11 |
15.5 |
| M20 |
140 |
25 |
6H |
16 |
12 |
17.5 |
| M22 |
140 |
25 |
6H |
18 |
14.5 |
19.5 |
| M24 |
160 |
30 |
6H |
18 |
14.5 |
21 |
Q1: Are you a factory or a trader?
A: We are a manufacturer integrating industry and trade, so you are welcome to visit our company.
Q2: Can I add my LOGO to the product?
A: We support on-demand customization, including LOGO customization, packing customization, etc.
Q3: What payment methods do you support?
A: We support T/T, Western Union, Paypal, cash, etc. The details can be negotiated.
Q4: What are your modes of transportation?
A: We usually choose the appropriate mode of transportation (sea, air, land) according to the conditions of the goods, or we can choose the mode of transportation according to your requirements.
Q5: How can I get an accurate quotation?
A: You can first send your specific demand information and product pictures, and we will customize a solution for you according to your needs and inform you of the specific price.
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